Portable device for thawing frozen ground



Patented May l6, I899. L. L. KENDALL. PORTABLE DEVICE FOR THAWING FROZEN GROUND.

(Application filed Apr. 27, 1898.)

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No. 624,945. Patentd May l6, I899.

|.. L. KENDALL.

PDRTABLE DEVICE FOR THAWING FROZEN GROUND.

Application filed. Apr. 27, 189B.) 1 (No Model.) 2 Sheets-Sheet 2.

Qywemtor UNITED STATES.

PATENT, OFFICE.

LOUIS LUNSFORD KENDALL, OF WILLIAMSBIIRG, KENTUCKY.

PORTABLE DEVICE FOR THAWING FROZEN GRO UND.

SPECIFICATION forming part of Letters Patent No. 624,945, dated. May 16, 1899.

Application filed April 27, 1898. $eria1No. 678,987. (No model.)

To all whom it may concern.-

Be it known that I, LOUIS LUNSFORD KEN- DALL, a citizen of the United States, residing at IVilliamsburg, in the county of Whitley and State of Kentucky, have invented certain new and useful Improvements in Portable Devices for Thawing Frozen Ground; and I do declare gold-bearing frozen earth may be thawed or the frost extracted, so that the usual mining operations may be pursued without regard to the season.

To these ends the invention consists in the construction, combination, and arrangement of the several parts of the heater, as will be hereinafter fully described, and particularly pointed out in the claim.

The same reference characters indicate the same parts of the device in the different views.

The accompanying drawings show my invention in the best form now known to me; but many changes in the details might be made within the skill of a good mechanic without departing from the spirit of this invention as set forth in the claim at the end of this specification.

Figure 1 is a schematic view of my improved heater or frost-extractor. Fig. 2 is a similar View showing a simpler form of connecting the heater with the supply-tank. Fig. 3 is a detail view of one of the burners.

1 denotes the tank or reservoir, preferably provided with a pressure-gage 2 and with an outlet-pipe 3, provided with a valve 4:, from which a pipe 5 extends to a universal balljoint coupling 0. An auxiliary outlet-pipe 7 extends from the bottom of the tank to the main outlet-pipe 5, and it is provided with a stop-valve 8, by means of which communication may be established between the pipes 7 and 5 when desired.

9 denotes that portion of the outlet-pipe 3 which projects within the tank or reservoir, and its free end is provided with a strainerwith air, whereby the, gasolene may be forced to the point of consumption. The inlet-pipe 16 of the air-pump is provided with a check valve 17, and a rubber pipe (not shown) may be utilized to refill the tank while in opera tion and without the necessity of releasing the air-pressure. However, I provide an independent screw-plug 18 for refilling the tank.

when desired. 7

From the coupling 6 a pipe 19 extends to the burner-battery 20, and it is provided with an indefinite number of universal couplings 21 21, by means .of which the burner-battery may be adjusted to the work in hand.

I have provided the burner-battery 20 with suitable handles 22 22 for conveniently manipulating it, whereby the flame may be applied to the surface of the ground or the side of a hill, as in placer-mining.

Instead of the pipe 19, provided with the universal couplings 21, I may use a flexible rubber pipe, in which instance the valve 4 is cut off and the supply taken from the tank by means of the pipe 7 and valve 8.

Having thus fully described my invention,

what I claim as new and useful, and desire tosecure by Letters Patent of the United States,

In combination, the supply tank, and

burner-battery flexibly connected therewith,

the alined handles 22 22 fixed to said battery,

LOUIS LUNSFORD KENDALL.

Witnesses:

JOHN L. WI-IITEHEAD, J OHN W. SILER. 

